This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A334324 #7 Apr 24 2020 07:51:59 %S A334324 4,8,24,64,200,504,1400,3648,9720,25560,67936,178464,472576,1244208, %T A334324 3286080,8663232,22861600,60291504,159063744,419556560,1106794584, %U A334324 2919596768,7701735288,20316965760,53595401400,141384847344,372973574160,983911970608,2595592842456,6847273559040 %N A334324 Number of irreducible endless self-avoiding walks of length n for the square lattice. %H A334324 Nathan Clisby, <a href="https://arxiv.org/abs/1302.2796">Endless self-avoiding walks</a>, arXiv:1302.2796 [cond-mat.stat-mech], 2013. See Table 2 column i_n p. 22. %Y A334324 Cf. A334322, A334323, A334325. %K A334324 nonn %O A334324 1,1 %A A334324 _Michel Marcus_, Apr 23 2020